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<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h3>int 是 {{ int|add:"2" }}</h3>
    <h3>str 是 {{ str|upper|lower }}</h3>
    <h3>lst 是 {{ lst }}</h3>
    <h3>lst0 是 {{ lst.0 }}</h3>
    <h3>dict是{{ dict }}</h3>
    <h3>dict['a']是 {{ dict.a }}</h3>
    <h3>function是{{ func }}</h3>
    <h3>class_obj 是 {{ class_obj.say }}</h3>
{#    <h3>script是{{ script|safe }}</h3>#}
</body>
</html>